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-   -   Thermal Boundary Layer Thickness (http://www.cfd-online.com/Forums/main/80471-thermal-boundary-layer-thickness.html)

Koranten September 27, 2010 11:20

Thermal Boundary Layer Thickness
 
Hi everyone,

In order to perform a calculation in free convection, I need a mesh fine enough to render the physical phenomena.

I am using FLUENT by the way.

If I understood well, the center of my first cell should be inferior at y+=11.

But how do I calculate the value of y+?

From what I understood, I am supposed to estimate a value of the free convection velocity, but I will also need an estimation of the friction coefficient, and also a way to calculate U_tau, beeing the friction velocity.

I think that these parameters are function of geometry, turbulence, and so on, but I guess I could find a summary somewhere.

Do you know where I could find some tutorial or something?

Regards.


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